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A post-decisional neural marker of confidence predicts information-seeking in decision-making

Kobe Desender, View ORCID ProfilePeter Murphy, View ORCID ProfileAnnika Boldt, View ORCID ProfileTom Verguts, View ORCID ProfileNick Yeung
doi: https://doi.org/10.1101/433276
Kobe Desender
1Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Germany
2Department of Experimental Psychology, Ghent University, Belgium
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Peter Murphy
1Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf, Germany
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Annika Boldt
3Institute of Cognitive Neuroscience, University College London, United Kingdom
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Tom Verguts
2Department of Experimental Psychology, Ghent University, Belgium
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Nick Yeung
4Department of Experimental Psychology, University of Oxford, United Kingdom
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Abstract

Theoretical work predicts that decisions made with low confidence should lead to increased information-seeking. This is an adaptive strategy because it can increase the quality of a decision, and previous behavioral work has shown that decision-makers engage in such confidence-driven information seeking. The present study aimed to characterize the neural markers that mediate the relationship between confidence and information-seeking. A paradigm was used in which human participants made an initial perceptual decision, and then decided whether or not they wanted to sample more evidence before committing to a final decision and confidence judgment. Pre-decisional and post-decisional ERP components were similarly modulated by the level of confidence and by information-seeking choices. Time-resolved multivariate decoding of scalp EEG signals first revealed that information-seeking choices could be decoded from the time of the initial decision to the time of the subsequent information-seeking choice (within-condition decoding). No above-chance decoding was visible in the pre-response time window. Crucially, a classifier trained to decode high versus low confidence predicted information-seeking choices after the initial perceptual decision (across-condition decoding). This time window corresponds to that of a post-decisional neural marker of confidence. Collectively, our findings demonstrate for the first time that neural indices of confidence are functionally involved in information-seeking decisions.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-ND 4.0 International license.
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Posted October 02, 2018.
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A post-decisional neural marker of confidence predicts information-seeking in decision-making
Kobe Desender, Peter Murphy, Annika Boldt, Tom Verguts, Nick Yeung
bioRxiv 433276; doi: https://doi.org/10.1101/433276
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A post-decisional neural marker of confidence predicts information-seeking in decision-making
Kobe Desender, Peter Murphy, Annika Boldt, Tom Verguts, Nick Yeung
bioRxiv 433276; doi: https://doi.org/10.1101/433276

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